<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Github Authorization</title>
    <style>
        body {
            padding: 20px;
        }

        div {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        div a {
            width: auto;
            padding: 10px 15px;
            text-align: center;
            background-color: #0170fe;
            color: #fff;
            text-decoration: none;
            border-radius: 5px;
        }
    </style>
</head>
<body>
    <div>
        <a href="/github/login">login by github</a>
    </div>
</body>
</html>